Double two-cycle engine.



W. L. MORROW.

DOUBLE TWO CYCLE ENGINE.

y v APPLICATION FILED 00T. 25, 1907. 903,753. Patented Nov. 10, 1908.

www@ an WILLIAM L. MORROW, UF STOCKTON, CALIFORNIA.

DOUBLE TWO-CYCLE ENGINE.

Stocktom'in the county of San Joaquin and `chambers and by such other State of California, have invented certain new i and useful Improvements in Double Two-Cycle Engines; and I do declare the following tobe a full, clear, .and exact descriptionv of the same, such as will enable others skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which forni a part of'tliis application.

This invention relates to improvements in engines and particularly a double two cycle engine, the object of the invention being to produce an engine which will have a means for clarifying the explosion cylinders before the n'ew charge enters. Also an engine having a vacuum intake mechanism in the pump thereof whereby is produced a clear and pure mixture which gives the full power of every explosion of the engine.' This object I accomplish by means of two cylinders spaced apart and having intermediate mixing and feed chambers, ports connecting the same, a vacuum intake mechanism for said mixing and further construction as will appear by a perusal of the following. specifications and claims.

In the drawingssimilar characters of reference indicate corresponding parts in the several views.

Figure l is a side elevation of the complete device. Fig. 2 is a sectional view taken on a line ma@ of Fig. 1. Fig. 3 is a sectional view of the complete engine taken relatively on a line yy'of Fig. 2.

Referring now more particularly to the characters of reference on the drawings 1 designates a base box in which is journaled a shaft 2 having thereon three cranks 8, fl and 5. Held upward from the base 1 are two cylinders G and 7 spaced apart forming a central cylinder divided into chambers S and 9 by means of av center division wall 10, said wall having a centrally oriced core 11, all for a purpose as will appear. Disposed in the core 11 is a rod l2 connected by driving -arm 13 to the crank 4. On the lower end of said rod l2 is a piston let and on the upper end a piston 15 operating ir the chambers S and 9 respectively. Disposed in the sides of the chambers 8 and Q are ports 16 and 17the port 1G being'adaptl ,Specification of Letters Patent.

Application filed October 25, 1907.

the cylinders Patented Nov. 10, 1908. Serial No. 399,140.

ed to open into the chamber when the piston l-t is in its lowest position and the port 17 into the chamber i) when the piston 15 is in its highest position.

1b isa carbureter which has a pipe l!) entering the port lo and a pipe 2() entering the port ,17.

An upwardly inclined port leads from the upper end of the chamber into the cylinder 7 while a downwardly inclined port 9" leads from the lower end of the chamber S) into vthe cylinder (i. Disposed in (he cylinder Gis a piston 2l connected by a rod 22 with the crank 5 in such inanner that the piston 15 will reach its lowest position, just. un instant after the piston 2l starts on its upward drive, thus keeping the pure air and driving' from the chamber t) into G until the port D closed by the piston 2l. Said piston 21 is provided with a baille plate 23 adapted to be infront of the port S)a when said piston 21 is in its Vlower position.

24 is an exhaust port in the side of the cylinder (i disposed in advance of the port SF* approximately one half inch, thereby perinittingthe exhaust before the new charge enters and continuing such exhaust until the port 9i1 is closed, thereby permitting a thorough cleansing of the products of combustion from the cylinder. Disposed in the cylinder 7 is a piston 25 connected with the crank 3 by means of a rod 2G and in such manner that the piston 14 will reach its highest position just an instant after the piston 25 starts on its upward drive, thus continuously driving pure air and gas into the cylinder 7 until the port 8d is closed by the piston 25, all as will appear hereinafter.

27 is a bathe plate on the piston 25 to be in front of the port 8 25 is in its lowest position.

28 is an exhaust port in the side of the cylinder' 7 similar in construction and purpose to the port 29 and 3() are the usual spark plugs in 6 and 'T respectively.

In practice the piston 21 drives upward adapted when the piston vjust an instant before the piston 15 drives upward, thus closing the port 9 and causing the drive of the piston to make a Vacuum in the chamber 9 which, when the port 17 opens, causes a' sudden and effective intake of gus through the pipe 20. Then with the downward drive of the pistons 15 and 2l thc ports 0 and 24 open before the the cylind ei'.

i chamber 'mally obliquely to piston 15 reaches its lowest position, thus permitting the fresh charge of air and gas to be forced from the chamber 9 through port 9a into the cylinder 6, strike the plate 23, and thus drive upward, thus forcing all the products of combustion from the cylinder 6 out through the port 24 and replacing the same with a elean,fresh charge which is suitably compressed withthe upward drive of the piston and exploded by the spark plug 29, thus driving said piston as is required, said pure air and gas being continuously forced into thecylinder 6 until the port 9a closes as has been described. The pistons 14 and 25 coperate in a similar manner as those just described, the vacuum being formed in the chamber 8, the charge of air and gas entering through the port 16 and pipe 19, the same being discharge through the port 8a driving the products of combustion in the cylinder 7 the port 28, and forcing air and gas from 8 into cylinder 7 until the port 8a is closed as described.

`To produce the movement of having the pistons 14 and 15 reach their highest and lowesL positions respectively after the pistons 21 and 25 start on their'upward drive, which closes the ports 8a and 9, I dispose the crank 4 on the shaftx2 in a manner northe cranks 3 and 5 as The core 11 may have shown in Fig. 2

for the usual pursuitable packing rings 11a In ractice I lill the box 1 with a suitable quantlty of lubricant which permits the cranks 3, 4 and 5 to throw the same onto the pistons, thus keeping the same automatically lubricated.

From the foregoing description it will be seen that I have pro uced an engine of the type set forth in which the Aexplosion chambers are always clarified by the entrance of the new charge. Also oneinwhich the inout through take of the new the pump cylinders is accomplished by automatic means, namely the vacuum, as described. These two main features enable me to construct an engine having a maximum of power and minimum of speed.

While this specification sets forth inde-v tail the present and preferred construction of my device, still in practice such small deviations therefrom may be resorted to as do not form a departure from the spirit of the invention.

Having thus described my invention what I claim -as new and desire to'secure by Letters Patent is y 1. A .gas eng-ine comprising two cylinders spaced apart, two chambers formed intermediate said cylinders, one above the other,

d a port leading from the lower end of theupper one of said chambers into one of said cylinders, a port leading fromthe upper end of said lower chamber into the other cylinder, andpistons operating in said chambers and said cylinders, as set forth.

2. A gas` engine comprising two cylinders spaced a art, a chamber formed intermediate said .cylinders and provided with a center division wall, a centrally oriced core in said division wall, atrod disposed through said core, a piston on each a crank shaft, means connecting said rod to said crank shaft, ports connecting the said chamber above and below said division wall to alternate ones of said cylinders, pistons in said cylinders connected with said crank shaft, and intake ports in said chamber adapted to be controlled by means of said pistons on said rod, as described.

In testimony whereof I alix my signature in presence of two witnesses. WILLIAM L. MORROW. Witnesses:

PERCY S. WEBSTER, FRANK I-I. CARTER.

charge of air and gas into end of said rod, 

